首页|Design of ultrahigh strength Al-Zn-Mg-Cu alloys through a hybrid approach of high-throughput precipitation simulation and decisive experiment

Design of ultrahigh strength Al-Zn-Mg-Cu alloys through a hybrid approach of high-throughput precipitation simulation and decisive experiment

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
The development of new engineering alloy chemistries and heat treatments is a time-consuming and iterative process.Here,a hybrid approach of the high-throughput precipitation simulations and deci-sive experiments is developed to optimize the composition and manipulate the microstructure of Al-Zn-Mg-Cu alloys to achieve the expected yield strength and elongation.For that purpose,a multi-class Kampmann-Wagner numerical(KWN)framework is established and the contributions to precipitation ki-netics and strength from primary phases and precipitates formed before age hardening are introduced for the first time.The composition/process-structure-property relationship of Al-Zn-Mg-Cu alloys is pre-sented and discussed in detail.Coupled with thermodynamic calculations,two concentration-optimized Al-Zn-Mg-Cu alloys with expected high yield strength and long elongation are designed,prepared,and characterized.The excellent strength and elongation of the designed alloys and the good agreement be-tween the measured and model-predicted mechanical properties for these two alloys underscores the remarkable predictive power of the presently developed material design strategy.This work establishes a novel material design strategy for rapidly exploring the compositional space and investigating the effects of composition and heat treatment on the microstructure and performance of ultrahigh strength Al alloys and other materials.

Materials designAl-Zn-Mg-Cu alloyKampmann-Wagner numerical modelPrecipitation hardening simulationHigh-throughput calculation

Ya Li、Xiaoyu Zheng、Yuling Liu、Yi Kong、Shilin Zeng、Bo Wang、Ziqing Xie、Qiang Du、Namin Xiao、Yong Du

展开 >

State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China

School of Mathematics and Statistics,Hunan Normal University,Changsha 410081,China

SINTEF Industry,Oslo,Norway

Application Evaluation Center of Aeronautical and Engine Materials,Aecc Beijing Institute of Aeronautical Materials,Beijing 100095,China

展开 >

National Key Research and Development Program of ChinaFunds for International Cooperation and Exchange of the National Natural Science Foundation of China

2018YFB070400351820105001

2024

10.1016/j.jmst.2023.12.072

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.195(28)